学生宿舍分配学生编号非空判断

Learun.Framework.Ultimate V7/Learun.Framework.Module/Learun.Application.Module/Learun.Application.TwoDevelopment/LogisticsManagement/Accommodation/AccommodationService.cs

@@ -1814,9 +1814,12 @@ where ID='{ParentID}'
                         }
                     }
 
-                    //分配床位
-                    string sql = $"update Acc_DormitoryBuild set StudentID='{entity.StudentID}' where ID='{entity.ID}'";
-                    db.ExecuteBySql(sql);
+                    if (!string.IsNullOrEmpty(entity.StudentID))
+                    {
+                        //分配床位
+                        string sql = $"update Acc_DormitoryBuild set StudentID='{entity.StudentID}' where ID='{entity.ID}'";
+                        db.ExecuteBySql(sql);
+                    }
                 }
 
                 int checkInStu = list.Where(x => x.StudentID != null).Count();